Quote: I have a 2005 2500HD with the Duramax, with the same problem of no aux power in the trailer connector.I checked in the manual and it says DO NOT install a fuse in the STUD 1 location on vehicles equipped with the diesel or 2 batteries. I have both.. How to Wire a Trailer Brake Control to a Chevy Silverado. so wiring a trailer brake control to either installation is a relatively straightforward project. DIY Truck Camper Wiring Tips & Information. How to Connect the White Ground Wire of a Trailer Wiring Package.. Chevrolet Silverado 1999-2006: How to Install Trailer Wiring Harness A trailer hitch cannot be legally used on your Chevy without properly fitting in a wire harness. Luckily, your first-generation Silverado already has a the necessary wires to make a hitch harness, so all.